... 5A, 13X drying,absorbent,cleaning ect. ISO9001:2000 product2.0 to 2.8mm molecular sieveProduct descriptionMolecular sieve is a material containing tiny ... in dehydration), or heating under high vacuum.3A (pore size 3 Å): Adsorbs NH3, H2O, (not C2H6), good for drying polar ... gas and absorbent for paraffin separation5A0.60-0.6520-210.3-0.5Dehydration, desulfurization and purification of air, natural gas ...